1252515542 has 8 divisors (see below), whose sum is σ = 1890740496. Its totient is φ = 622268712.

The previous prime is 1252515541. The next prime is 1252515637. The reversal of 1252515542 is 2455152521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1252515499 and 1252515508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252515541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994138 + ... + 1994765.

It is an arithmetic number, because the mean of its divisors is an integer number (236342562).

Almost surely, 2^1252515542 is an apocalyptic number.

1252515542 is a deficient number, since it is larger than the sum of its proper divisors (638224954).

1252515542 is a wasteful number, since it uses less digits than its factorization.

1252515542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989062.

The product of its digits is 20000, while the sum is 32.

The square root of 1252515542 is about 35390.8963152955. The cubic root of 1252515542 is about 1077.9394702825.

The spelling of 1252515542 in words is "one billion, two hundred fifty-two million, five hundred fifteen thousand, five hundred forty-two".